“…Advertisement calls have been described for 24 of the 61 described species of Hyloxalus, including H. abditaurantius (Silverstone, 1975) (Grant and Castro, 1998), H. arliensis (Acosta-Galvis et al, 2020), H. awa (Coloma, 1995), H. azureiventris (Lötters and Kneller, 2000), H. bocagei Jiménez de la Espada, 1870 (Páez-Vacas et al, 2010), H. elachyhistus (Edwards, 1971) (Koch et al, 2011), H. fascianigrus (Grant and Castro, 1998), H. felixcoperari Acosta-Galvis and Vargas-Ramírez, 2018, H. italoi Páez-Vacas et al, 2010, H. jacobuspetersi (Coloma, 1995), H. maculosus (Rivero, 1991) (Páez-Vacas et al, 2010), H. mystax (Duellman and Simmons, 1988) (Almendáriz and Batallas, 2011), H. nexipus (Frost, 1986) (Coloma, 1995), H. patitae (Lötters et al, 2003b), H. pulchellus (Coloma, 1995), H. sanctamariensis Acosta-Galvis and Pinzón, 2018, H. sauli (Edwards, 1974) (Páez-Vacas et al, 2010), H. subpunctatus (Cope, 1899) (Fandiño et al, 1997; Navas and Bevier, 2001), H. toachi (Coloma, 1995) (Quiguango-Ubillús and Coloma, 2008), H. vergeli Hellmich, 1940 (Mendoza-Henao et al, 2022), H. vertebralis (Coloma, 1995), and H. yasuni Páez-Vacas et al, 2010.…”